Multiple Querys with mut acces and changed filters cant be used without QuerySet #1791
Labels
A-ECS
Entities, components, systems, and events
C-Bug
An unexpected or incorrect behavior
S-Needs-Design
This issue requires design work to think about how it would best be accomplished
Bevy version
d6bc414
Operating system & version
Windows 10
What you did
I wanted to remove a QuerySet that seemed unneeded, but then Bevy Panicked: https://github.com/bevyengine/bevy/blob/main/crates/bevy_render/src/camera/camera.rs#L70-L73
I then reduced it to this minimal example:
What you expected to happen
The minimum example should not Panic.
What actually happened
It Panicked, while claiming the system would break Rust's mutability rules, which it cant:
thread 'main' panicked at 'Query<bevy_ecs::entity::Entity, bevy_ecs::query::filter::Added<hello_world::TestStruct>> in system &hello_world::test_system accesses component(s) hello_world::TestStruct in a way that conflicts with a previous system parameter. Allowing this would break Rust's mutability rules. Consider merging conflicting Queries into a QuerySet.', crates\bevy_ecs\src\system\system_param.rs:144:5
Additional information
Bisecting the Repo, the example Panics after #1525 was merged.
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